<!DOCTYPE html>
<html>

<head>
  <meta charset="utf-8">
  <meta name="renderer" content="webkit|ie-comp|ie-stand">
  <meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">
  <meta name="viewport" content="width=device-width,initial-scale=1,minimum-scale=1.0,maximum-scale=1.0,user-scalable=no" />
  <meta http-equiv="Cache-Control" content="no-siteapp" />
  <title>公众号二维码</title>
</head>

<body>
  <div class="qrcode">
    <div>
      <img src="https://upload.shinehao.com.cn/20180914112753qrcode_for_gh_b6767e951b9e_1280.jpg">
    </div>
    <div style="margin-top:10px;">您未关注公众号,请长按识别二维码,关注公众号</div>
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  </div>
</body>

<style>
  body {
    height: 100%;
    margin: 0;
    padding: 0;
  }

  .qrcode {
    position: absolute;
    top: 50%;
    transform: translate(0, -50%);
    text-align: center;
    width: 100%;
  }

  .qrcode img {
    width: 100%;
    min-width: 50px;
    max-width: 200px;
  }
</style>

</html>